must sied
Verbe régulier : sied - sieded- sieded
Traduction française : (US) faire de la luge - (US) transporter en luge 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must sied
you must sied
she must sied
we must sied
you must sied
they must sied 	I must be sieding
you must be sieding
she must be sieding
we must be sieding
you must be sieding
they must be sieding	I must have sieded
you must have sieded
she must have sieded
we must have sieded
you must have sieded
they must have sieded	I must have been sieding
you must have been sieding
she must have been sieding
we must have been sieding
you must have been sieding
they must have been sieding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't sied
you mustn't sied
she mustn't sied
we mustn't sied
you mustn't sied
they mustn't sied 	I mustn't be sieding
you mustn't be sieding
she mustn't be sieding
we mustn't be sieding
you mustn't be sieding
they mustn't be sieding	I mustn't have sieded
you mustn't have sieded
she mustn't have sieded
we mustn't have sieded
you mustn't have sieded
they mustn't have sieded	I mustn't have been sieding
you mustn't have been sieding
she mustn't have been sieding
we mustn't have been sieding
you mustn't have been sieding
they mustn't have been sieding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I sied?
must you sied?
must she sied?
must we sied?
must you sied?
must they sied? 	must I be sieding?
must you be sieding?
must she be sieding?
must we be sieding?
must you be sieding?
must they be sieding? 	must I have sieded?
must you have sieded?
must she have sieded?
must we have sieded?
must you have sieded?
must they have sieded? 	must I have been sieding?
must you have been sieding?
must she have been sieding?
must we have been sieding?
must you have been sieding?
must they have been sieding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I sied?
mustn't you sied?
mustn't she sied?
mustn't we sied?
mustn't you sied?
mustn't they sied? 	mustn't I be sieding?
mustn't you be sieding?
mustn't she be sieding?
mustn't we be sieding?
mustn't you be sieding?
mustn't they be sieding? 	mustn't I have sieded?
mustn't you have sieded?
mustn't she have sieded?
mustn't we have sieded?
mustn't you have sieded?
mustn't they have sieded? 	mustn't I have been sieding?
mustn't you have been sieding?
mustn't she have been sieding?
mustn't we have been sieding?
mustn't you have been sieding?
mustn't they have been sieding?